4. SELECTING THE ADJUSTING ITEMS
1) Every pressing of CHANNEL s button in the service mode changes the adjustment items in the order of table-2.
(t button for reverse order)
Refer to table-2 for preset data of adjustment mode.
(See SETTING & ADJUSTING DATA on page 17)
5. ADJUSTING THE DATA
1) Pressing of VOLUME s or t button will cahnge the value of data in the range from 00H to FFH. The variable range
depends on the adjusting item.
6. EXIT FROM SERVICE MODE
1) Pressing POWER button to turn off the TV once.
n INITIALIZATION OF MEMORY DATA OF QA02
GENERAL ADJUSTMENTSAfter replacing QA02, the following initialization is required.
1. Enter the service mode, then select any register item.
2. Press and hold the RECALL button on the Remote, then press the CHANNEL s button on the TV. The initialization of QA02
has been complated.
3. Check the picture carefully. If necessary, adjust any adjustment item above.
Perform OProgramming Channel Memory� on the owner's manual.
CAUTION: Never attempt to initialize the data unless QA02 has been replaced.
7. SELF DIAGNOSTIC FUNCTION
1) Press O9� button on Remote Control during display of adjustment menu in the service mode.
The diagnosis will begin to check if interface among ICOs are executed properly.
2) During diagnosis, the following displays are shown.
SPECIFIC INFORMATIONSSELF CHECK
1NO. 23XXXXXX
2POWER : 000
3BUS LINE : OK
4BUS CONT : OK
5BLOCK : MAIN SUB
1 Part number of microprocessor (QA01)
2 Operation number of protection circuit (current limiter) . . . . O000� is normal.
3 BUS line checkOOK� ................... Normal
OSCL-GND� or ONG� ........... SCL-GND short circuit
OSDA-GND� or ONG� ........... SDA-GND short circuit
OSCL-SDA� or ONG� ............ SCL-SDA short circuit
4 BUS line ACK (acknowledge) check
OOK� ..................... Normal
Display of Location Number . . . . NG
(Display example)
OQA02 NG�, OH001 NG�, OQ501 NG� etc.
Note: The indication of failure place is only one place though failure places are plural. When
repair of a failure place finishes, the next failure place is indicated. (The order of priority of
indication is left side.)
5 Sync. signal checkGreen display..... Normal
Red display ........ NG
MAIN ........ Main sync
SUB .......... Sub sync (when turn on the PIP)
� 10 � |
ACEC
